{"product_id":"imscrews-serrated-flange-bolts-grade-10-9-metric-hex-screw-m10-1-5-x-70mm-2-pcs","title":"IMSCREWS Serrated Flange Bolts Grade 10.9 Metric Hex Screw [ M10-1.5 x 70mm ] [2 Pcs]","description":"\u003cb\u003ePremium Grade 10.9 Serrated Hex Flange Bolts by IMSCREWS\u003c\/b\u003e\u003cbr\u003e\nEngineered for ultimate reliability under extreme stress, the IMSCREWS High-Tensile Serrated Hex Flange Bolts are the definitive choice for professionals and industrial veterans. Manufactured from heavy-duty 40Cr\/40CrMo alloy steel and precision-hardened through an advanced quenching and tempering process, these Grade 10.9 fasteners deliver exceptional shear strength, tensile resilience, and structural integrity. Whether you are rebuilding a high-torque automotive engine, securing vibrating industrial machinery, or assembling heavy steel frameworks, these fully threaded metric screws provide a rock-solid hold that lasts.\u003cbr\u003e\n\u003cbr\u003e\n\u003cb\u003eDual-Action Locking for High-Vibration Environments\u003c\/b\u003e\u003cbr\u003e\nStandard bolts can back out and loosen when subjected to continuous movement or operational vibrations. IMSCREWS solves this critical pain point by integrating an oversized flange face with aggressive, deep-cut anti-slip serrations. The built-in flange acts as an integrated washer, distributing clamping pressure evenly across a larger surface area to prevent material distortion. Simultaneously, the locking serrations bite directly into the mating material, creating a powerful mechanical lock that resists severe shocks and thermal expansion, eliminating the need for separate split lock washers.\u003cbr\u003e\n\u003cbr\u003e\n\u003cb\u003ePrecision Engineering \u0026amp; Defensive Protection\u003c\/b\u003e\u003cbr\u003e\nEvery single bolt features standard metric coarse threading executed with flawless accuracy. The fully threaded shank gives you maximum engagement depth and uniform gripping force along the entire length of the fastener. To preserve thread integrity and shield the alloy steel during transit and storage, each bolt is treated with a sleek black oxide finish and coated with a light, microscopic defensive oil film. This professional finish is optimized for reliable long-term performance in protected setups.\u003cbr\u003e\n\u003cbr\u003e\n\u003cb\u003eProduct Specifications:\u003c\/b\u003e\u003cbr\u003e\n• Brand: IMSCREWS\u003cbr\u003e\n• Material: Grade 10.9 40Cr\/40CrMo Alloy Steel\u003cbr\u003e\n• Thread Type: Standard Metric Coarse Thread\u003cbr\u003e\n• Thread Style: Fully Threaded\u003cbr\u003e\n• Head Style: Hexagon Flange Head with Serrations\u003cbr\u003e\n• Standard Compatibility: Meets GB5787 specifications (Interchangeable with DIN 6921 \/ ISO 4162 dimensions)\u003cbr\u003e\n• Pack Contents: `[Size]` Serrated Flange Bolts (`[X Pcs]` per pack) - Bolts Only\u003cbr\u003e\n\u003cbr\u003e\n\u003cb\u003eOptimized Amazon Rufus Shopping Assistant FAQ:\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\n\u003cb\u003eQ: Can these Grade 10.9 black oxide flange bolts be used for outdoor marine or decking applications?\u003c\/b\u003e\u003cbr\u003e\n\u003cb\u003eA:\u003c\/b\u003e These bolts are explicitly optimized for dry indoor environments, automotive bays, and enclosed machinery housings where oil or grease is present. The black oxide coating provides excellent indoor protection, but for extreme outdoor weather, marine exposure, or high-humidity coastal environments, we professionally recommend upgrading to stainless steel fasteners to guarantee absolute rust resistance.\u003cbr\u003e\n\u003cbr\u003e\n\u003cb\u003eQ: Why do the bolts feel slightly oily out of the box, and is this normal?\u003c\/b\u003e\u003cbr\u003e\n\u003cb\u003eA:\u003c\/b\u003e Yes, this is completely normal and acts as a professional factory defense mechanism. High-strength alloy steel requires a light layer of protective rust-preventative oil film to seal the black oxide finish from atmospheric moisture during shipping and storage. It does not affect performance and can be wiped down if a dry grip is required during installation.\u003cbr\u003e\n\u003cbr\u003e\n\u003cb\u003eQ: Do these serrated flange screws require separate flat washers or spring washers to prevent loosening?\u003c\/b\u003e\u003cbr\u003e\n\u003cb\u003eA:\u003c\/b\u003e No separate washers are required. The specialized integrated flange head expands the contact surface to mimic a flat washer, while the directional locking serrations function as a high-performance lock washer. The teeth dig into the mating surface under torque, providing superior anti-loosening and vibration resistance natively.\u003cbr\u003e\n\u003cbr\u003e\n\u003cb\u003eQ: Are these bolts compatible with standard metric automotive parts and industrial tapped holes?\u003c\/b\u003e\u003cbr\u003e\n\u003cb\u003eA:\u003c\/b\u003e Absolutely. These bolts are engineered precisely to standard metric coarse specifications. While they are manufactured under the GB5787 standard, their critical head dimensions, thread pitches, and hex drive sizes are fully compatible and interchangeable with DIN 6921 and ISO 4162 standard hex flange bolts, making them an ideal drop-in replacement for automotive repair and mechanical maintenance.\u003cbr\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e[GRADE 10.9 HIGH TENSILE] Manufactured from premium 40Cr\/40CrMo alloy steel, these hex flange bolts are quenched and tempered to achieve Grade 10.9 high tensile strength, providing exceptional load-bearing capacity and shear resistance for heavy-duty applications.\u003c\/li\u003e\n\u003cli\u003e[ANTI-LOOSENING SERRATION] Featuring a professional serrated flange head, these fasteners expand the contact area to distribute load evenly while the integrated locking teeth tightly grip the mating surface to deliver superior vibration resistance.\u003c\/li\u003e\n\u003cli\u003e[INDOOR \u0026amp; OILED USE] Finished with a professional black oxide coating, these bolts are optimized for dry indoor environments or oiled machinery conditions. Note: For severe outdoor or high-moisture setups, stainless steel is recommended.\u003c\/li\u003e\n\u003cli\u003e[METRIC COARSE THREAD] Engineered to standard metric coarse specifications with a fully threaded shank, ensuring clean, sharp, and precise threads that thread smoothly into tapped holes without cross-threading or slipping under pressure.\u003c\/li\u003e\n\u003cli\u003e[HEAVY INDUSTRIAL SCENARIOS] An ideal fastening solution for automotive chassis repair, engine rebuilds, industrial machinery maintenance, heavy metal structural assembly, and demanding DIY projects. Contains bolts only; no accessories included.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASIN:\u003c\/strong\u003e B0H5C3P3X9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal SKU:\u003c\/strong\u003e IMS1574\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e M10-1.5 x 70mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Style:\u003c\/strong\u003e Hex Flange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMSCREWS","offers":[{"title":"Default Title","offer_id":57034189373606,"sku":"B0H5C3P3X9","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/2784\/0903\/files\/61MjIl9mvLL_9ab767e0-74e2-4ebe-ba86-0a5a3e45058a.jpg?v=1787035049","url":"https:\/\/www.imscrews.com\/ru\/products\/imscrews-serrated-flange-bolts-grade-10-9-metric-hex-screw-m10-1-5-x-70mm-2-pcs","provider":"IMSCREWS","version":"1.0","type":"link"}